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AVIATION WEATHER CENTER (ADDS)

NATIONAL WEATHER SERVICE

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    Precautionary Use Statement: This product is for flight planning purposes only and should always be used in combination with ceiling and visibility (C&V) information from official sources such as METARs, AIRMETs, TAFs and Area Forecasts. CVA (Ceiling and Visibility Analysis) is intended to aid situational awareness with a quick-glance visualization of current C&V conditions across an area or along a route of flight. CVA derives C&V for areas between METAR stations so may, as a function of distance from a METAR, misrepresent actual conditions. See the Help Page for additional information on CVA use and limitations.

  • Plotted Ceiling, Visibility, and Flight Category:
    Select either "Ceiling", "Visibility", or "Flight Category" condition, choose a valid time, then click on a region of the map.
     Ceiling or
     Visibility or
     Flight Category
    Valid at
Contiguous US LWS: Lewiston, ID sector WMC: Winnemucca, NV sector LAS: Las Vegas, NV sector COD: Cody, WY sector DEN: Denver, CO sector ABQ: Albuquerque, NM sector PIR: Pierre, SD sector ICT: Wichita, KS sector AUS: Austin, TX sector MSP: Minneapolis, MN sector DTW: Detroit, MI sector EVV: Evansville, IN sector LIT: Little Rock, AR sector ALB: Albany, NY sector BWI: Baltimore, MD sector CLT: Charlotte, NC sector MGM: Mongomery, AL sector TPA: Tampa, FL sector

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